i Tunes includes updates for all generations of i Pods and can detect which i Pod models you have.
Next to the word is information that describes the software version installed.
You can also determine the software version on your i Pod touch, i Pod nano, i Pod classic, or i Pod shuffle by using i Tunes.
Connect the i Pod to your computer and select it in the i Tunes source pane (in the Devices section).
The Summary page appears to the right of the source pane, and the software version appears next to Software Version at the top of the page.
By Tony Bove You should always keep your i Pod updated with new versions of the software that controls the device — which is i OS for the i Pod touch, or the i Pod system software for an i Pod classic, i Pod nano, and i Pod shuffle.